It was a brief synopsis, showing that the subject was more in depth than just about color of said coolant.That was all I wanted to show.

Plenty of info on coolants available on the net , and in shop repair software,like alldata , etc.

Just tryin to speak a little "bubba" here. Best to let questions be asked, than to give a long lecture no one will read.

Thanks for the speaking "bubba".

Actually there's a pretty good almost technical article in Wikipedia on engine coolants. It has enough information to make any reader dangerous to themselves and anyone nearby but does develop the differences in silicates (green); OATs (usually but not always orange); HOATs (usually some weird Asian color but not always).

I inherited a 90's Chevy Lumina..... from Florida so it was not a rust bucket, but knew about the myriad of problems with the 3.1 engine gaskets so I researched it and talked to several mechanics I trust.... All of them said the exact same thing.... the gaskets will fail.... it's a matter of time... but the cost to change the gaskets was more than the car was worth, so "drive it until it fails." Ahhhh I don't do that... so I sold it. In the old days, I might have attempted to change the gaskets myself as the new/recommended gaskets were relatively cheap.... as always, it was the labor cost that kills the deal.... PS.... the car had other problems as well.... a radio that never worked right, an electrical short draw down (again, probably the GM radio), the AC failed, and the the injectors needed to be replaced at 50,000 miles....

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